Mean price of a gallon of regular gasoline

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According to a study, the mean price of a gallon of regular gasoline in the United States is $2.35. A sample of 25 Chicago area gas stations shows the mean price of $2.55. The standard deviation of the population is known to be $0.20. Develop a hypothesis test that can be used to determine whether the mean price of a gallon of regular gasoline in the Chicago area is different than $2.35(Using the alpha of 5%)

Reference no: EM131440818

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